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______ your composition carefully, some spelling mistakes can be avoided.

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 ______ your composition carefully, some spelling mistakes can be avoided.

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________ your composition carefully, some spelling mistakes can be avoided.

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________ your composition carefully, some spelling mistakes can be avoided.

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_________ your composition carefully, some spelling mistakes can be avoided.

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_______ your composition carefully, some spelling mistakes can be avoided.

A. Having checked B. Check

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________ your composition carefully, some spelling mistakes can be avoided.

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________ your composition carefully, some spelling mistakes can be avoided.

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________ your composition carefully, some spelling mistakes can be avoided.

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